Removal of gas bubbles from highly viscous non-Newtonian fluids using controlled vibration
Removal of gas bubbles from highly viscous non-Newtonian fluids using controlled vibration
复制标题
使用受控振动去除高粘性非牛顿流体中的气泡
DOI：
10.1016/j.ces.2018.04.012
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发表时间：
2018-08
影响因子：
4.7
通讯作者：
Li Xiwen
中科院分区：
文献类型：
--
作者：
Zhan Xiaobin;He Yu;Shen Baojun;Sun Zhibin;Shi Tielin;Li Xiwen
当液体在敞开的容器中搅拌或流动时，气泡的形成是正常的，实际上是不可避免的。不需要的气泡会损害产品质量，而且很难从高粘性流体中去除。本文采用流体体积(VOF)模型和连续表面力(CSF)模型相结合的方法，研究了高粘度非牛顿流体振动除气的有效性。模拟了液体中气泡在振动作用下的运动，研究了各种流变参数和振动参数对脱气率的影响。结果表明，振动引起的剪切变稀(或增稠)是非牛顿流体脱气速率增强(或减慢)的主要原因。流体的非牛顿行为越明显，振动对脱气速率的影响越大。脱气率由振动幅度和振动频率决定。然而，高频或大振幅的振动可能会加剧气体的滞留，并在流体中产生新的气泡。在此基础上，进一步研究了振动除气的可行范围，即振动频率和振幅不会产生新的气泡。振动除气技术的优点是不需要对容器使用介入性设备，也不限制容器的结构或形状，因此在实验室和工业领域将得到广泛的应用。
Formation of gas bubbles is normal and practically inevitable when fluids are agitated or flow in open containers. The unwanted gas bubbles will damage the product quality, and they are very difficult to be removed from highly viscous fluids. In this paper, the effectiveness of vibration degassing for highly viscous non-Newtonian fluids is investigated using volume of fluid (VOF) model coupled with continuous surface force (CSF) model. The motions of gas bubbles in liquid under vibration are simulated and the effects of various rheological parameters as well as vibration parameters on the degassing rate are studied. The results show that the shear thinning (or thickening) induced by vibration is responsible for the enhancement (or retardation) of degassing rate for non-Newtonian fluids. The more pronounced the non-Newtonian behaviors of fluids are, the greater the effects of vibration on the degassing rate are. The degassing rate is governed by the vibration amplitude and frequency of vibration. However, high frequency or large amplitude vibration may intensify air entrapment and bring new gas bubbles into fluids. Thus, the feasible region of vibration degassing in which the vibration frequency and amplitude don’t cause new gas bubbles are further studied. The vibration degassing technology has the added advantage that it does not use intrusive devices to container, nor does it limit the container structure or shape, and thus will find wide applications in laboratory and industrial fields.
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影响因子：
2.3
作者：
H. Puga;J. Barbosa;J. C. Teixeira;M. Prokić
通讯作者：
H. Puga;J. Barbosa;J. C. Teixeira;M. Prokić
DOI：
10.1016/j.piutam.2013.04.007
发表时间：
2013
期刊：
Procedia IUTAM
影响因子：
--
作者：
I. Blekhman;L. I. Blekhman;V. Sorokin;L. Vaisberg;V. B. Vasilkov;K. Yakimova
通讯作者：
I. Blekhman;L. I. Blekhman;V. Sorokin;L. Vaisberg;V. B. Vasilkov;K. Yakimova
影响因子：
4.7
作者：
M. Eesa;M. Barigou
通讯作者：
M. Eesa;M. Barigou
DOI：
10.1080/02286203.2016.1142287
发表时间：
2015-04
影响因子：
3.1
作者：
A. Gollakota;N. Kishore
通讯作者：
A. Gollakota;N. Kishore
影响因子：
5.6
作者：
V. Sorokin;I. Blekhman;V. B. Vasilkov
通讯作者：
V. Sorokin;I. Blekhman;V. B. Vasilkov